1 files changed, 226 insertions, 104 deletions

diff --git a/src/pulsecore/namereg.c b/src/pulsecore/namereg.c
index 0f35ed1c..d9821876 100644
--- a/src/pulsecore/namereg.c
+++ b/src/pulsecore/namereg.c
@@ -1,18 +1,18 @@
-/* $Id$ */
-
 /***
   This file is part of PulseAudio.
- 
+
+  Copyright 2004-2006 Lennart Poettering
+
   PulseAudio is free software; you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as published
-  by the Free Software Foundation; either version 2 of the License,
+  by the Free Software Foundation; either version 2.1 of the License,
   or (at your option) any later version.
- 
+
   PulseAudio is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   General Public License for more details.
- 
+
   You should have received a copy of the GNU Lesser General Public License
   along with PulseAudio; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
@@ -25,17 +25,16 @@
 
 #include <stdlib.h>
 #include <string.h>
-#include <assert.h>
 #include <string.h>
 #include <stdio.h>
 
 #include <pulse/xmalloc.h>
 
-#include <pulsecore/autoload.h>
 #include <pulsecore/source.h>
 #include <pulsecore/sink.h>
 #include <pulsecore/core-subscribe.h>
 #include <pulsecore/core-util.h>
+#include <pulsecore/macro.h>
 
 #include "namereg.h"
 
@@ -45,104 +44,200 @@ struct namereg_entry {
     void *data;
 };
 
-void pa_namereg_free(pa_core *c) {
-    assert(c);
-    if (!c->namereg)
-        return;
-    assert(pa_hashmap_size(c->namereg) == 0);
-    pa_hashmap_free(c->namereg, NULL, NULL);
+static pa_bool_t is_valid_char(char c) {
+    return
+        (c >= 'a' && c <= 'z') ||
+        (c >= 'A' && c <= 'Z') ||
+        (c >= '0' && c <= '9') ||
+        c == '.' ||
+        c == '-' ||
+        c == '_';
+}
+
+pa_bool_t pa_namereg_is_valid_name(const char *name) {
+    const char *c;
+
+    pa_assert(name);
+
+    if (*name == 0)
+        return FALSE;
+
+    for (c = name; *c && (c-name < PA_NAME_MAX); c++)
+        if (!is_valid_char(*c))
+            return FALSE;
+
+    if (*c)
+        return FALSE;
+
+    return TRUE;
+}
+
+pa_bool_t pa_namereg_is_valid_name_or_wildcard(const char *name, pa_namereg_type_t type) {
+
+    pa_assert(name);
+
+    if (pa_namereg_is_valid_name(name))
+        return TRUE;
+
+    if (type == PA_NAMEREG_SINK &&
+        pa_streq(name, "@DEFAULT_SINK@"))
+        return TRUE;
+
+    if (type == PA_NAMEREG_SOURCE &&
+        (pa_streq(name, "@DEFAULT_SOURCE@") ||
+         pa_streq(name, "@DEFAULT_MONITOR@")))
+        return TRUE;
+
+    return FALSE;
 }
 
-const char *pa_namereg_register(pa_core *c, const char *name, pa_namereg_type_t type, void *data, int fail) {
+char* pa_namereg_make_valid_name(const char *name) {
+    const char *a;
+    char *b, *n;
+
+    if (*name == 0)
+        return NULL;
+
+    n = pa_xnew(char, strlen(name)+1);
+
+    for (a = name, b = n; *a && (a-name < PA_NAME_MAX); a++, b++)
+        *b = (char) (is_valid_char(*a) ? *a : '_');
+
+    *b = 0;
+
+    return n;
+}
+
+const char *pa_namereg_register(pa_core *c, const char *name, pa_namereg_type_t type, void *data, pa_bool_t fail) {
     struct namereg_entry *e;
     char *n = NULL;
-    int r;
-    
-    assert(c && name && data);
 
-    if (!c->namereg) {
-        c->namereg = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
-        assert(c->namereg);
+    pa_assert(c);
+    pa_assert(name);
+    pa_assert(data);
+
+    if (!*name)
+        return NULL;
+
+    if ((type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE || type == PA_NAMEREG_CARD) &&
+        !pa_namereg_is_valid_name(name)) {
+
+        if (fail)
+            return NULL;
+
+        if (!(name = n = pa_namereg_make_valid_name(name)))
+            return NULL;
     }
 
-    if ((e = pa_hashmap_get(c->namereg, name)) && fail)
+    if ((e = pa_hashmap_get(c->namereg, name)) && fail) {
+        pa_xfree(n);
         return NULL;
+    }
 
-    if (!e)
-        n = pa_xstrdup(name);
-    else {
+    if (e) {
         unsigned i;
         size_t l = strlen(name);
-        n = pa_xmalloc(l+3);
-        
-        for (i = 1; i <= 99; i++) {
-            snprintf(n, l+2, "%s%u", name, i);
+        char *k;
+
+        if (l+4 > PA_NAME_MAX) {
+            pa_xfree(n);
+            return NULL;
+        }
+
+        k = pa_xmalloc(l+4);
 
-            if (!(e = pa_hashmap_get(c->namereg, n)))
+        for (i = 2; i <= 99; i++) {
+            pa_snprintf(k, l+4, "%s.%u", name, i);
+
+            if (!(e = pa_hashmap_get(c->namereg, k)))
                 break;
         }
 
         if (e) {
             pa_xfree(n);
+            pa_xfree(k);
             return NULL;
         }
+
+        pa_xfree(n);
+        n = k;
     }
-    
-    assert(n);
-    e = pa_xmalloc(sizeof(struct namereg_entry));
+
+    e = pa_xnew(struct namereg_entry, 1);
     e->type = type;
-    e->name = n;
+    e->name = n ? n : pa_xstrdup(name);
     e->data = data;
 
-    r = pa_hashmap_put(c->namereg, e->name, e);
-    assert (r >= 0);
+    pa_assert_se(pa_hashmap_put(c->namereg, e->name, e) >= 0);
+
+    /* If a sink or source is registered and there was none registered
+     * before we inform the clients which then can ask for the default
+     * sink/source which is then assigned. We don't adjust the default
+     * sink/source here right away to give the module the chance to
+     * register more sinks/sources before we choose a new default
+     * sink/source. */
+
+    if ((!c->default_sink && type == PA_NAMEREG_SINK) ||
+        (!c->default_source && type == PA_NAMEREG_SOURCE))
+        pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SERVER|PA_SUBSCRIPTION_EVENT_CHANGE, PA_INVALID_INDEX);
 
     return e->name;
-    
 }
 
 void pa_namereg_unregister(pa_core *c, const char *name) {
     struct namereg_entry *e;
-    assert(c && name);
 
-    e = pa_hashmap_remove(c->namereg, name);
-    assert(e);
+    pa_assert(c);
+    pa_assert(name);
+
+    pa_assert_se(e = pa_hashmap_remove(c->namereg, name));
+
+    if (c->default_sink == e->data)
+        pa_namereg_set_default_sink(c, NULL);
+    else if (c->default_source == e->data)
+        pa_namereg_set_default_source(c, NULL);
 
     pa_xfree(e->name);
     pa_xfree(e);
 }
 
-void* pa_namereg_get(pa_core *c, const char *name, pa_namereg_type_t type, int autoload) {
+void* pa_namereg_get(pa_core *c, const char *name, pa_namereg_type_t type) {
     struct namereg_entry *e;
     uint32_t idx;
-    assert(c);
-    
-    if (!name) {
-        if (type == PA_NAMEREG_SOURCE)
-            name = pa_namereg_get_default_source_name(c);
-        else if (type == PA_NAMEREG_SINK)
-            name = pa_namereg_get_default_sink_name(c);
+    pa_assert(c);
+
+    if (type == PA_NAMEREG_SOURCE && (!name || pa_streq(name, "@DEFAULT_SOURCE@"))) {
+        pa_source *s;
+
+        if ((s = pa_namereg_get_default_source(c)))
+            return s;
+
+    } else if (type == PA_NAMEREG_SINK && (!name || pa_streq(name, "@DEFAULT_SINK@"))) {
+        pa_sink *s;
+
+        if ((s = pa_namereg_get_default_sink(c)))
+            return s;
+
+    } else if (type == PA_NAMEREG_SOURCE && name && pa_streq(name, "@DEFAULT_MONITOR@")) {
+        pa_sink *s;
+
+        if ((s = pa_namereg_get(c, NULL, PA_NAMEREG_SINK)))
+            return s->monitor_source;
     }
 
     if (!name)
         return NULL;
-    
-    if (c->namereg && (e = pa_hashmap_get(c->namereg, name)))
+
+    if ((type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE || type == PA_NAMEREG_CARD) &&
+        !pa_namereg_is_valid_name(name))
+        return NULL;
+
+    if ((e = pa_hashmap_get(c->namereg, name)))
         if (e->type == type)
             return e->data;
 
-    if (pa_atou(name, &idx) < 0) {
-
-        if (autoload) {
-            pa_autoload_request(c, name, type);
-            
-            if (c->namereg && (e = pa_hashmap_get(c->namereg, name)))
-                if (e->type == type)
-                    return e->data;
-        }
-        
+    if (pa_atou(name, &idx) < 0)
         return NULL;
-    }
 
     if (type == PA_NAMEREG_SINK)
         return pa_idxset_get_by_index(c->sinks, idx);
@@ -150,65 +245,92 @@ void* pa_namereg_get(pa_core *c, const char *name, pa_namereg_type_t type, int a
         return pa_idxset_get_by_index(c->sources, idx);
     else if (type == PA_NAMEREG_SAMPLE && c->scache)
         return pa_idxset_get_by_index(c->scache, idx);
+    else if (type == PA_NAMEREG_CARD)
+        return pa_idxset_get_by_index(c->cards, idx);
 
     return NULL;
 }
 
-void pa_namereg_set_default(pa_core*c, const char *name, pa_namereg_type_t type) {
-    char **s;
-    assert(c && (type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE));
-
-    s = type == PA_NAMEREG_SINK ? &c->default_sink_name : &c->default_source_name;
-    assert(s);
-
-    if (!name && !*s)
-        return;
-    
-    if (name && *s && !strcmp(name, *s))
-        return;
-    
-    pa_xfree(*s);
-    *s = pa_xstrdup(name);
-    pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SERVER|PA_SUBSCRIPTION_EVENT_CHANGE, PA_INVALID_INDEX);
+pa_sink* pa_namereg_set_default_sink(pa_core*c, pa_sink *s) {
+    pa_assert(c);
+
+    if (s && !PA_SINK_IS_LINKED(pa_sink_get_state(s)))
+        return NULL;
+
+    if (c->default_sink != s) {
+        c->default_sink = s;
+        pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SERVER|PA_SUBSCRIPTION_EVENT_CHANGE, PA_INVALID_INDEX);
+    }
+
+    return s;
 }
 
-const char *pa_namereg_get_default_sink_name(pa_core *c) {
-    pa_sink *s;
-    assert(c);
+pa_source* pa_namereg_set_default_source(pa_core*c, pa_source *s) {
+    pa_assert(c);
 
-    if (c->default_sink_name)
-        return c->default_sink_name;
-    
-    if ((s = pa_idxset_first(c->sinks, NULL)))
-        pa_namereg_set_default(c, s->name, PA_NAMEREG_SINK);
+    if (s && !PA_SOURCE_IS_LINKED(pa_source_get_state(s)))
+        return NULL;
 
-    if (c->default_sink_name)
-        return c->default_sink_name;
+    if (c->default_source != s) {
+        c->default_source = s;
+        pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SERVER|PA_SUBSCRIPTION_EVENT_CHANGE, PA_INVALID_INDEX);
+    }
 
-    return NULL;
+    return s;
 }
 
-const char *pa_namereg_get_default_source_name(pa_core *c) {
-    pa_source *s;
+pa_sink *pa_namereg_get_default_sink(pa_core *c) {
+    pa_sink *s, *best = NULL;
     uint32_t idx;
-    
-    assert(c);
 
-    if (c->default_source_name)
-        return c->default_source_name;
+    pa_assert(c);
 
-    for (s = pa_idxset_first(c->sources, &idx); s; s = pa_idxset_next(c->sources, &idx))
-        if (!s->monitor_of) {
-            pa_namereg_set_default(c, s->name, PA_NAMEREG_SOURCE);
-            break;
-        }
+    if (c->default_sink && PA_SINK_IS_LINKED(pa_sink_get_state(c->default_sink)))
+        return c->default_sink;
+
+    PA_IDXSET_FOREACH(s, c->sinks, idx)
+        if (PA_SINK_IS_LINKED(pa_sink_get_state(s)))
+            if (!best || s->priority > best->priority)
+                best = s;
+
+    if (best)
+        return pa_namereg_set_default_sink(c, best);
 
-    if (!c->default_source_name)
-        if ((s = pa_idxset_first(c->sources, NULL)))
-            pa_namereg_set_default(c, s->name, PA_NAMEREG_SOURCE);
+    return NULL;
+}
+
+pa_source *pa_namereg_get_default_source(pa_core *c) {
+    pa_source *s, *best = NULL;
+    uint32_t idx;
 
-    if (c->default_source_name)
-        return c->default_source_name;
+    pa_assert(c);
+
+    if (c->default_source && PA_SOURCE_IS_LINKED(pa_source_get_state(c->default_source)))
+        return c->default_source;
+
+    /* First, try to find one that isn't a monitor */
+    PA_IDXSET_FOREACH(s, c->sources, idx)
+        if (!s->monitor_of && PA_SOURCE_IS_LINKED(pa_source_get_state(s)))
+            if (!best ||
+                s->priority > best->priority)
+                best = s;
+
+    if (best)
+        return pa_namereg_set_default_source(c, best);
+
+    /* Then, fallback to a monitor */
+    PA_IDXSET_FOREACH(s, c->sources, idx)
+        if (PA_SOURCE_IS_LINKED(pa_source_get_state(s)))
+            if (!best ||
+                s->priority > best->priority ||
+                (s->priority == best->priority &&
+                 s->monitor_of &&
+                 best->monitor_of &&
+                 s->monitor_of->priority > best->monitor_of->priority))
+                best = s;
+
+    if (best)
+        return pa_namereg_set_default_source(c, best);
 
     return NULL;
 }